Remus

Senior Full-Stack Engineer & Systems Administrator

Dec 2010 - Present • 15 yrs 11 mos

Managed end to end web operations for clients, covering the complete technical cycle: server setup and security, custom backend code, frontend UX improvements, and long-term maintenance. On the software development side, I engineered web applications, custom SaaS platforms, CRMs, and ERPs using Laravel, Symfony, and PHP. I also delivered advanced customizations for major e-commerce and CMS platforms including WordPress, WooCommerce, OpenCart, and Joomla. My work focused on complex backend logic, custom API integrations, dynamic pricing engines, automated transactional modules, and zero-downtime mass data migrations. On the infrastructure and sysadmin side, I managed, tuned, and secured cloud, VPS, and dedicated servers using control panels such as cPanel/WHM, CWP Pro, and Plesk. I optimized web server stacks (Nginx, LiteSpeed, Apache, PHP-FPM, MySQL/MariaDB) through deep database query tuning, custom caching, automated cleanup routines, and offsite backup systems. On the security and performance side, I proactively protected client platforms against live cyberattacks by implementing custom firewall rules, smart CAPTCHA systems, and dynamic AI/bot rate-limiting. Additionally, I drove frontend speed to top-tier standards (100% PageSpeed scores) and implemented full event-tracking infrastructures (Hotjar, Google Tag Manager) to continuously refine UI/UX based on actual user data.

Network Administrator / Owner

Dec 2005 - Nov 2010 • 4 yrs 11 mos

Founded and operated an independent neighborhood Internet Service Provider, managing network infrastructure, routing, and technical operations for over 150 active residential clients across multiple apartment buildings. Handled end-to-end network planning, deployment, and daily maintenance. Engineered and managed advanced traffic routing, subnetting, and bandwidth allocation to ensure stable, low-latency connectivity during peak hours. Maintained physical distribution nodes, switches, and cabling while proactively diagnosing and resolving routing loops, hardware bottlenecks, and connectivity disruptions. Delivered reliable, localized technical support and managed subscriber onboarding, demonstrating full-cycle responsibility for infrastructure performance and network uptime.